How often are the turbines in the hot section of the jet engines replaced due to deteriorated TBC? or just how often are they replaced? lets say for CFM56-7
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$\begingroup$ Related: aviation.stackexchange.com/questions/71091/… $\endgroup$– BianfableOct 28, 2019 at 7:35
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$\begingroup$ You can restrict your question to a specific model of engines as it may vary from engines to engines. $\endgroup$– Manu HOct 28, 2019 at 12:35
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So this article, says that the average brand new CFM56-7 will go 18,000 cycles (i.e. flights) before its first shop visit. You can't replace the turbine blade on-wing, only in the overhaul shop. So we could say that the blades would last at least 18,000 flights, potentially longer.
